SCART

Connections

SCART is a European standard plug which delivers multiple signals through 21 pins. The SCART connector is a standard interface for combining audio, composite video, RGB video and some control signals to one connector. The connector standardises the pin-outs and signal levels, but does not demand that all equipment has to implement every function. Typically, modern TVs implement every function, but VCRs use only composite video and audio I/O of the connector.

The SCART (Syndicat des Constructeurs d'Appareils Radiorécepteurs et Téléviseurs) connector is used for combined audio and video connections. The connector is also known as Pértitel connector or Euroconnector.

A formal description is given in the CENELEC EN 50 049-1:1989 standard or in the IEC 933-1 standard.

Different pin-configurations exist. Which configurations are available depends on the video device used. Sometimes one can choose the configuration (like composite or S-video) by changing the software setting. Two status signals define (partly) which video signals are active. A video device can use these status signals to automatically switch between internal or external audio/video signals.

Male SCART socket - seen from the front

RGB Connection

Output connector Input connector
1 Audio right out 2 Audio right in
3 Audio left (or mono) out 6 Audio left (or mono) in
4 Audio return 4 Audio return
7 Blue out 7 Blue in
5 Blue return 5 Blue return
11 Green out 11 Green in
9 Green return 9 Green return
15 Red out 15 Red in
13 Red return 13 Red return
16 RGB status out 16 RGB status in
14 RGB status return 14 RGB status return
19 Sync (composite video) out 20 Sync (composite video) in
17 Sync return 18 Sync return
21 Shield 21 Shield


S-Video Connection

Output connector Input connector
1 Audio right out 2 Audio right in
3 Audio left (or mono) out 6 Audio left (or mono) in
4 Audio return 4 Audio return
15 Chrominance out 15 Chrominance in
13 Chrominance return 13 Chrominance return
8 Video status out 8 Video status in
19 Luminance out 20 Luminance in
17 Luminance return 18 Luminance return
21 Shield 21 Shield

Composite Video Connection

Output connector Input connector
1 Audio right out 2 Audio right in
3 Audio left (or mono) out 6 Audio left (or mono) in
4 Audio return 4 Audio return
8 Video status out 8 Video status in
19 Composite video out 20 Composite video in
17 Composite video return 18 Composite video return
21 Shield 21 Shield

(Composite) Decoder Connection

Receiver connector Decoder connector
1 Audio right out 2 Audio right in
2 Audio right in 1 Audio right out
3 Audio left out 6 Audio left in
6 Audio left in 3 Audio left out
4 Audio return 4 Audio return
8 Video status in 8 Video status out
19 Baseband out (scrambled) 20 Baseband in
17 Baseband out return 18 Baseband in return
20 Composite video in (unscrambled) 19 Composite video out
18 Composite video in return 17 Composite video out return
21 Shield 21 Shield


EasyLink Connection (additional)

Television connector Video recorder connector
10 I/O Control Bus 10 I/O Control Bus

EasyLink enables bi-directional communication between a television set and a video recorder. This way a video recorder can, for example, copy the channel settings of the television set. Who knows the details?

Signal Levels

Signal AC level DC level Impedance
Red, green, blue Peak to blanking: 0...0.7 V ±3 dB 0...2 V 75 Ohm
Sync Peak to peak: 0...0.3 V -3 dB...+10 dB 0...2 V 75 Ohm
Composite video White to sync: 0...1.0 V ±3 dB 0...2 V 75 Ohm
Chrominance 0...0.3 V -3 dB...+10 dB 0...2 V 75 Ohm
Luminance 0...1.0 V ±3 dB 0...2 V 75 Ohm
MAC Black to white: 0...1.0 V ±3 dB 0...2 V 75 Ohm
Audio in 0.2...2.0 V (nominal: 0.5 V)   >=10 kOhm
Audio out Nominal: 0.5 V (maximum: 2.0 V)   <=1 kOhm
Video status Low data rate communication: 0.0...2.0 V
(e.g. remote control; Easylink)		 Internal: 0.0...2.0 V
External (16:9): 4.5...7.0 V
External (4:3): 9.5...12.0 V		 In: ZR>=10 kOhm
ZC<=2 nF
Out: ZR<=1 kOhm
RGB status   Internal: 0.0...0.4 V
External: 1.0...3.0 V		 75 Ohm

 

 

 
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